diff --git a/batchverifier.go b/batchverifier.go
index 661e382898..d265e6e4f4 100644
--- a/batchverifier.go
+++ b/batchverifier.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/batchverifier_test.go b/batchverifier_test.go
index 3922105aa5..6f3c5954fc 100644
--- a/batchverifier_test.go
+++ b/batchverifier_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/crypto_test.go b/crypto_test.go
index ee3a23d58f..82273c6fbe 100644
--- a/crypto_test.go
+++ b/crypto_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/cryptoerror.go b/cryptoerror.go
index b635f1ea88..6d1b468c5e 100644
--- a/cryptoerror.go
+++ b/cryptoerror.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/curve25519.go b/curve25519.go
index 0961ed6263..9a7e92ad2a 100644
--- a/curve25519.go
+++ b/curve25519.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/curve25519_test.go b/curve25519_test.go
index fac0bd6ab9..9bbbb11158 100644
--- a/curve25519_test.go
+++ b/curve25519_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/digest.go b/digest.go
index 967fa68abf..3e20fb236a 100644
--- a/digest.go
+++ b/digest.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/encoding_test.go b/encoding_test.go
index 0093b6c587..e400a19f7a 100644
--- a/encoding_test.go
+++ b/encoding_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/falconWrapper.go b/falconWrapper.go
index 4930210425..63158fcc85 100644
--- a/falconWrapper.go
+++ b/falconWrapper.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/falconWrapper_test.go b/falconWrapper_test.go
index cb251c7d89..4d8720e9f9 100644
--- a/falconWrapper_test.go
+++ b/falconWrapper_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/hashes.go b/hashes.go
index 3e232ed27d..b4392300bf 100644
--- a/hashes.go
+++ b/hashes.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/hashes_test.go b/hashes_test.go
index 2988f9ca1e..8999834423 100644
--- a/hashes_test.go
+++ b/hashes_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/memcpy_chk_windows.c b/memcpy_chk_windows.c
index 3cff6c7da2..c48d685f0d 100644
--- a/memcpy_chk_windows.c
+++ b/memcpy_chk_windows.c
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklearray/array.go b/merklearray/array.go
index 2e1eccb398..cfab888cde 100644
--- a/merklearray/array.go
+++ b/merklearray/array.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklearray/layer.go b/merklearray/layer.go
index bed28ccf51..728653ff7e 100644
--- a/merklearray/layer.go
+++ b/merklearray/layer.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklearray/merkle.go b/merklearray/merkle.go
index e540586b53..f77b6dcf7b 100644
--- a/merklearray/merkle.go
+++ b/merklearray/merkle.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
@@ -21,10 +21,10 @@ import (
 	"errors"
 	"fmt"
 	"hash"
+	"slices"
 	"sort"
 
 	"github.com/algorand/go-algorand/crypto"
-	"golang.org/x/exp/slices"
 )
 
 const (
diff --git a/merklearray/merkle_test.go b/merklearray/merkle_test.go
index f62d6c282c..4c15f74df6 100644
--- a/merklearray/merkle_test.go
+++ b/merklearray/merkle_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklearray/partial.go b/merklearray/partial.go
index baebf4538d..e16dc7f12c 100644
--- a/merklearray/partial.go
+++ b/merklearray/partial.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklearray/proof.go b/merklearray/proof.go
index 8caa057bd3..bd88562d51 100644
--- a/merklearray/proof.go
+++ b/merklearray/proof.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklearray/proof_test.go b/merklearray/proof_test.go
index 7ef7ae044b..dd93d1a8f4 100644
--- a/merklearray/proof_test.go
+++ b/merklearray/proof_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklearray/vectorCommitmentArray.go b/merklearray/vectorCommitmentArray.go
index 6745aca603..82bdc8c67e 100644
--- a/merklearray/vectorCommitmentArray.go
+++ b/merklearray/vectorCommitmentArray.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklearray/vectorCommitmentArray_test.go b/merklearray/vectorCommitmentArray_test.go
index 24b1d32e9d..136609df78 100644
--- a/merklearray/vectorCommitmentArray_test.go
+++ b/merklearray/vectorCommitmentArray_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklearray/worker.go b/merklearray/worker.go
index 2c33440679..9d5179cbef 100644
--- a/merklearray/worker.go
+++ b/merklearray/worker.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/committablePublicKeys.go b/merklesignature/committablePublicKeys.go
index a636b3f02a..8cd8857057 100644
--- a/merklesignature/committablePublicKeys.go
+++ b/merklesignature/committablePublicKeys.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/committablePublicKeys_test.go b/merklesignature/committablePublicKeys_test.go
index 68463bf8e6..979528f236 100644
--- a/merklesignature/committablePublicKeys_test.go
+++ b/merklesignature/committablePublicKeys_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/const.go b/merklesignature/const.go
index 40817d4215..a7e529771f 100644
--- a/merklesignature/const.go
+++ b/merklesignature/const.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/kats_test.go b/merklesignature/kats_test.go
index 64b3e8c539..53aff9c2f0 100644
--- a/merklesignature/kats_test.go
+++ b/merklesignature/kats_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/keysBuilder.go b/merklesignature/keysBuilder.go
index 68ee76ae30..aaf8ce8a47 100644
--- a/merklesignature/keysBuilder.go
+++ b/merklesignature/keysBuilder.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/keysBuilder_test.go b/merklesignature/keysBuilder_test.go
index 01dd082fd4..c54c230bd9 100644
--- a/merklesignature/keysBuilder_test.go
+++ b/merklesignature/keysBuilder_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/merkleSignatureScheme.go b/merklesignature/merkleSignatureScheme.go
index 61724af4ec..a17a59c84b 100644
--- a/merklesignature/merkleSignatureScheme.go
+++ b/merklesignature/merkleSignatureScheme.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/merkleSignatureScheme_test.go b/merklesignature/merkleSignatureScheme_test.go
index 5abd9b77cb..9670e90ba1 100644
--- a/merklesignature/merkleSignatureScheme_test.go
+++ b/merklesignature/merkleSignatureScheme_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/persistentMerkleSignatureScheme.go b/merklesignature/persistentMerkleSignatureScheme.go
index 66f1dd055b..e3cd8c4b9d 100644
--- a/merklesignature/persistentMerkleSignatureScheme.go
+++ b/merklesignature/persistentMerkleSignatureScheme.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/persistentMerkleSignatureScheme_test.go b/merklesignature/persistentMerkleSignatureScheme_test.go
index adc22833f1..95179f3f04 100644
--- a/merklesignature/persistentMerkleSignatureScheme_test.go
+++ b/merklesignature/persistentMerkleSignatureScheme_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/posdivs.go b/merklesignature/posdivs.go
index 09b798c780..b1d8374b10 100644
--- a/merklesignature/posdivs.go
+++ b/merklesignature/posdivs.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merklesignature/posdivs_test.go b/merklesignature/posdivs_test.go
index 68f4b77aba..cb3fd5275a 100644
--- a/merklesignature/posdivs_test.go
+++ b/merklesignature/posdivs_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merkletrie/bitset.go b/merkletrie/bitset.go
index f764137a9a..7862576b78 100644
--- a/merkletrie/bitset.go
+++ b/merkletrie/bitset.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merkletrie/bitset_test.go b/merkletrie/bitset_test.go
index 315b27c952..2bf3bc392a 100644
--- a/merkletrie/bitset_test.go
+++ b/merkletrie/bitset_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merkletrie/cache.go b/merkletrie/cache.go
index d4d60b2c39..3f8a8d861d 100644
--- a/merkletrie/cache.go
+++ b/merkletrie/cache.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
@@ -21,9 +21,8 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
-
-	"golang.org/x/exp/maps"
-	"golang.org/x/exp/slices"
+	"maps"
+	"slices"
 )
 
 // storedNodeIdentifier is the "equivalent" of a node-ptr, but oriented around persisting the
@@ -448,8 +447,7 @@ func (mtc *merkleTrieCache) reallocatePendingPages(stats *CommitStats) (pagesToC
 	}
 
 	// create a sorted list of created pages
-	sortedCreatedPages := maps.Keys(createdPages)
-	slices.Sort(sortedCreatedPages)
+	sortedCreatedPages := slices.Sorted(maps.Keys(createdPages))
 
 	mtc.reallocatedPages = make(map[uint64]map[storedNodeIdentifier]*node)
 
diff --git a/merkletrie/cache_test.go b/merkletrie/cache_test.go
index ac08ea442f..9ff3649efb 100644
--- a/merkletrie/cache_test.go
+++ b/merkletrie/cache_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merkletrie/committer.go b/merkletrie/committer.go
index 66dd2c65c8..eb935a901e 100644
--- a/merkletrie/committer.go
+++ b/merkletrie/committer.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
@@ -16,7 +16,7 @@
 
 package merkletrie
 
-import "golang.org/x/exp/slices"
+import "slices"
 
 // Committer is the interface supporting serializing tries into persistent storage.
 type Committer interface {
diff --git a/merkletrie/committer_test.go b/merkletrie/committer_test.go
index 3dc6c39d2a..004c0b60f7 100644
--- a/merkletrie/committer_test.go
+++ b/merkletrie/committer_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
@@ -18,10 +18,10 @@ package merkletrie
 
 import (
 	"encoding/binary"
+	"slices"
 	"testing"
 
 	"github.com/stretchr/testify/require"
-	"golang.org/x/exp/slices"
 
 	"github.com/algorand/go-algorand/crypto"
 	"github.com/algorand/go-algorand/test/partitiontest"
diff --git a/merkletrie/node.go b/merkletrie/node.go
index f63d2b12ab..c7b616d6e6 100644
--- a/merkletrie/node.go
+++ b/merkletrie/node.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
@@ -19,11 +19,11 @@ package merkletrie
 import (
 	"bytes"
 	"encoding/binary"
+	"slices"
 	"sort"
 	"unsafe"
 
 	"github.com/algorand/go-algorand/crypto"
-	"golang.org/x/exp/slices"
 )
 
 type childEntry struct {
diff --git a/merkletrie/node_test.go b/merkletrie/node_test.go
index c9fc2e46f4..1ffa67bb8b 100644
--- a/merkletrie/node_test.go
+++ b/merkletrie/node_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merkletrie/trie.go b/merkletrie/trie.go
index 6bb2a51851..4686647e75 100644
--- a/merkletrie/trie.go
+++ b/merkletrie/trie.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/merkletrie/trie_test.go b/merkletrie/trie_test.go
index 7b15d5534e..96eae19f66 100644
--- a/merkletrie/trie_test.go
+++ b/merkletrie/trie_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/msgp_gen.go b/msgp_gen.go
index ab5bdceb88..fc279029a0 100644
--- a/msgp_gen.go
+++ b/msgp_gen.go
@@ -111,6 +111,16 @@ import (
 //     |-----> MsgIsZero
 //     |-----> HashTypeMaxSize()
 //
+// HeartbeatProof
+//        |-----> (*) MarshalMsg
+//        |-----> (*) CanMarshalMsg
+//        |-----> (*) UnmarshalMsg
+//        |-----> (*) UnmarshalMsgWithState
+//        |-----> (*) CanUnmarshalMsg
+//        |-----> (*) Msgsize
+//        |-----> (*) MsgIsZero
+//        |-----> HeartbeatProofMaxSize()
+//
 // MasterDerivationKey
 //          |-----> (*) MarshalMsg
 //          |-----> (*) CanMarshalMsg
@@ -1169,6 +1179,232 @@ func HashTypeMaxSize() (s int) {
 	return
 }
 
+// MarshalMsg implements msgp.Marshaler
+func (z *HeartbeatProof) MarshalMsg(b []byte) (o []byte) {
+	o = msgp.Require(b, z.Msgsize())
+	// omitempty: check for empty values
+	zb0006Len := uint32(5)
+	var zb0006Mask uint8 /* 6 bits */
+	if (*z).PK == (ed25519PublicKey{}) {
+		zb0006Len--
+		zb0006Mask |= 0x2
+	}
+	if (*z).PK1Sig == (ed25519Signature{}) {
+		zb0006Len--
+		zb0006Mask |= 0x4
+	}
+	if (*z).PK2 == (ed25519PublicKey{}) {
+		zb0006Len--
+		zb0006Mask |= 0x8
+	}
+	if (*z).PK2Sig == (ed25519Signature{}) {
+		zb0006Len--
+		zb0006Mask |= 0x10
+	}
+	if (*z).Sig == (ed25519Signature{}) {
+		zb0006Len--
+		zb0006Mask |= 0x20
+	}
+	// variable map header, size zb0006Len
+	o = append(o, 0x80|uint8(zb0006Len))
+	if zb0006Len != 0 {
+		if (zb0006Mask & 0x2) == 0 { // if not empty
+			// string "p"
+			o = append(o, 0xa1, 0x70)
+			o = msgp.AppendBytes(o, ((*z).PK)[:])
+		}
+		if (zb0006Mask & 0x4) == 0 { // if not empty
+			// string "p1s"
+			o = append(o, 0xa3, 0x70, 0x31, 0x73)
+			o = msgp.AppendBytes(o, ((*z).PK1Sig)[:])
+		}
+		if (zb0006Mask & 0x8) == 0 { // if not empty
+			// string "p2"
+			o = append(o, 0xa2, 0x70, 0x32)
+			o = msgp.AppendBytes(o, ((*z).PK2)[:])
+		}
+		if (zb0006Mask & 0x10) == 0 { // if not empty
+			// string "p2s"
+			o = append(o, 0xa3, 0x70, 0x32, 0x73)
+			o = msgp.AppendBytes(o, ((*z).PK2Sig)[:])
+		}
+		if (zb0006Mask & 0x20) == 0 { // if not empty
+			// string "s"
+			o = append(o, 0xa1, 0x73)
+			o = msgp.AppendBytes(o, ((*z).Sig)[:])
+		}
+	}
+	return
+}
+
+func (_ *HeartbeatProof) CanMarshalMsg(z interface{}) bool {
+	_, ok := (z).(*HeartbeatProof)
+	return ok
+}
+
+// UnmarshalMsg implements msgp.Unmarshaler
+func (z *HeartbeatProof) UnmarshalMsgWithState(bts []byte, st msgp.UnmarshalState) (o []byte, err error) {
+	if st.AllowableDepth == 0 {
+		err = msgp.ErrMaxDepthExceeded{}
+		return
+	}
+	st.AllowableDepth--
+	var field []byte
+	_ = field
+	var zb0006 int
+	var zb0007 bool
+	zb0006, zb0007, bts, err = msgp.ReadMapHeaderBytes(bts)
+	if _, ok := err.(msgp.TypeError); ok {
+		zb0006, zb0007, bts, err = msgp.ReadArrayHeaderBytes(bts)
+		if err != nil {
+			err = msgp.WrapError(err)
+			return
+		}
+		if zb0006 > 0 {
+			zb0006--
+			bts, err = msgp.ReadExactBytes(bts, ((*z).Sig)[:])
+			if err != nil {
+				err = msgp.WrapError(err, "struct-from-array", "Sig")
+				return
+			}
+		}
+		if zb0006 > 0 {
+			zb0006--
+			bts, err = msgp.ReadExactBytes(bts, ((*z).PK)[:])
+			if err != nil {
+				err = msgp.WrapError(err, "struct-from-array", "PK")
+				return
+			}
+		}
+		if zb0006 > 0 {
+			zb0006--
+			bts, err = msgp.ReadExactBytes(bts, ((*z).PK2)[:])
+			if err != nil {
+				err = msgp.WrapError(err, "struct-from-array", "PK2")
+				return
+			}
+		}
+		if zb0006 > 0 {
+			zb0006--
+			bts, err = msgp.ReadExactBytes(bts, ((*z).PK1Sig)[:])
+			if err != nil {
+				err = msgp.WrapError(err, "struct-from-array", "PK1Sig")
+				return
+			}
+		}
+		if zb0006 > 0 {
+			zb0006--
+			bts, err = msgp.ReadExactBytes(bts, ((*z).PK2Sig)[:])
+			if err != nil {
+				err = msgp.WrapError(err, "struct-from-array", "PK2Sig")
+				return
+			}
+		}
+		if zb0006 > 0 {
+			err = msgp.ErrTooManyArrayFields(zb0006)
+			if err != nil {
+				err = msgp.WrapError(err, "struct-from-array")
+				return
+			}
+		}
+	} else {
+		if err != nil {
+			err = msgp.WrapError(err)
+			return
+		}
+		if zb0007 {
+			(*z) = HeartbeatProof{}
+		}
+		for zb0006 > 0 {
+			zb0006--
+			field, bts, err = msgp.ReadMapKeyZC(bts)
+			if err != nil {
+				err = msgp.WrapError(err)
+				return
+			}
+			switch string(field) {
+			case "s":
+				bts, err = msgp.ReadExactBytes(bts, ((*z).Sig)[:])
+				if err != nil {
+					err = msgp.WrapError(err, "Sig")
+					return
+				}
+			case "p":
+				bts, err = msgp.ReadExactBytes(bts, ((*z).PK)[:])
+				if err != nil {
+					err = msgp.WrapError(err, "PK")
+					return
+				}
+			case "p2":
+				bts, err = msgp.ReadExactBytes(bts, ((*z).PK2)[:])
+				if err != nil {
+					err = msgp.WrapError(err, "PK2")
+					return
+				}
+			case "p1s":
+				bts, err = msgp.ReadExactBytes(bts, ((*z).PK1Sig)[:])
+				if err != nil {
+					err = msgp.WrapError(err, "PK1Sig")
+					return
+				}
+			case "p2s":
+				bts, err = msgp.ReadExactBytes(bts, ((*z).PK2Sig)[:])
+				if err != nil {
+					err = msgp.WrapError(err, "PK2Sig")
+					return
+				}
+			default:
+				err = msgp.ErrNoField(string(field))
+				if err != nil {
+					err = msgp.WrapError(err)
+					return
+				}
+			}
+		}
+	}
+	o = bts
+	return
+}
+
+func (z *HeartbeatProof) UnmarshalMsg(bts []byte) (o []byte, err error) {
+	return z.UnmarshalMsgWithState(bts, msgp.DefaultUnmarshalState)
+}
+func (_ *HeartbeatProof) CanUnmarshalMsg(z interface{}) bool {
+	_, ok := (z).(*HeartbeatProof)
+	return ok
+}
+
+// Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message
+func (z *HeartbeatProof) Msgsize() (s int) {
+	s = 1 + 2 + msgp.ArrayHeaderSize + (64 * (msgp.ByteSize)) + 2 + msgp.ArrayHeaderSize + (32 * (msgp.ByteSize)) + 3 + msgp.ArrayHeaderSize + (32 * (msgp.ByteSize)) + 4 + msgp.ArrayHeaderSize + (64 * (msgp.ByteSize)) + 4 + msgp.ArrayHeaderSize + (64 * (msgp.ByteSize))
+	return
+}
+
+// MsgIsZero returns whether this is a zero value
+func (z *HeartbeatProof) MsgIsZero() bool {
+	return ((*z).Sig == (ed25519Signature{})) && ((*z).PK == (ed25519PublicKey{})) && ((*z).PK2 == (ed25519PublicKey{})) && ((*z).PK1Sig == (ed25519Signature{})) && ((*z).PK2Sig == (ed25519Signature{}))
+}
+
+// MaxSize returns a maximum valid message size for this message type
+func HeartbeatProofMaxSize() (s int) {
+	s = 1 + 2
+	// Calculating size of array: z.Sig
+	s += msgp.ArrayHeaderSize + ((64) * (msgp.ByteSize))
+	s += 2
+	// Calculating size of array: z.PK
+	s += msgp.ArrayHeaderSize + ((32) * (msgp.ByteSize))
+	s += 3
+	// Calculating size of array: z.PK2
+	s += msgp.ArrayHeaderSize + ((32) * (msgp.ByteSize))
+	s += 4
+	// Calculating size of array: z.PK1Sig
+	s += msgp.ArrayHeaderSize + ((64) * (msgp.ByteSize))
+	s += 4
+	// Calculating size of array: z.PK2Sig
+	s += msgp.ArrayHeaderSize + ((64) * (msgp.ByteSize))
+	return
+}
+
 // MarshalMsg implements msgp.Marshaler
 func (z *MasterDerivationKey) MarshalMsg(b []byte) (o []byte) {
 	o = msgp.Require(b, z.Msgsize())
diff --git a/msgp_gen_test.go b/msgp_gen_test.go
index b3fb95150b..0105a58f1d 100644
--- a/msgp_gen_test.go
+++ b/msgp_gen_test.go
@@ -434,6 +434,66 @@ func BenchmarkUnmarshalHashFactory(b *testing.B) {
 	}
 }
 
+func TestMarshalUnmarshalHeartbeatProof(t *testing.T) {
+	partitiontest.PartitionTest(t)
+	v := HeartbeatProof{}
+	bts := v.MarshalMsg(nil)
+	left, err := v.UnmarshalMsg(bts)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(left) > 0 {
+		t.Errorf("%d bytes left over after UnmarshalMsg(): %q", len(left), left)
+	}
+
+	left, err = msgp.Skip(bts)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(left) > 0 {
+		t.Errorf("%d bytes left over after Skip(): %q", len(left), left)
+	}
+}
+
+func TestRandomizedEncodingHeartbeatProof(t *testing.T) {
+	protocol.RunEncodingTest(t, &HeartbeatProof{})
+}
+
+func BenchmarkMarshalMsgHeartbeatProof(b *testing.B) {
+	v := HeartbeatProof{}
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		v.MarshalMsg(nil)
+	}
+}
+
+func BenchmarkAppendMsgHeartbeatProof(b *testing.B) {
+	v := HeartbeatProof{}
+	bts := make([]byte, 0, v.Msgsize())
+	bts = v.MarshalMsg(bts[0:0])
+	b.SetBytes(int64(len(bts)))
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		bts = v.MarshalMsg(bts[0:0])
+	}
+}
+
+func BenchmarkUnmarshalHeartbeatProof(b *testing.B) {
+	v := HeartbeatProof{}
+	bts := v.MarshalMsg(nil)
+	b.ReportAllocs()
+	b.SetBytes(int64(len(bts)))
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		_, err := v.UnmarshalMsg(bts)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
 func TestMarshalUnmarshalMasterDerivationKey(t *testing.T) {
 	partitiontest.PartitionTest(t)
 	v := MasterDerivationKey{}
diff --git a/multisig.go b/multisig.go
index f17833f1a0..f696b1d361 100644
--- a/multisig.go
+++ b/multisig.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/multisig_test.go b/multisig_test.go
index 614889c5a7..11e1dd791c 100644
--- a/multisig_test.go
+++ b/multisig_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/onetimesig.go b/onetimesig.go
index d05ccaa961..11930d633e 100644
--- a/onetimesig.go
+++ b/onetimesig.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
@@ -57,6 +57,56 @@ type OneTimeSignature struct {
 	PK2Sig ed25519Signature `codec:"p2s"`
 }
 
+// A HeartbeatProof is functionally equivalent to a OneTimeSignature, but it has
+// been cleaned up for use as a transaction field in heartbeat transactions.
+type HeartbeatProof struct {
+	_struct struct{} `codec:",omitempty,omitemptyarray"`
+
+	// Sig is a signature of msg under the key PK.
+	Sig ed25519Signature `codec:"s"`
+	PK  ed25519PublicKey `codec:"p"`
+
+	// PK2 is used to verify a two-level ephemeral signature.
+	PK2 ed25519PublicKey `codec:"p2"`
+	// PK1Sig is a signature of OneTimeSignatureSubkeyOffsetID(PK, Batch, Offset) under the key PK2.
+	PK1Sig ed25519Signature `codec:"p1s"`
+	// PK2Sig is a signature of OneTimeSignatureSubkeyBatchID(PK2, Batch) under the master key (OneTimeSignatureVerifier).
+	PK2Sig ed25519Signature `codec:"p2s"`
+}
+
+// ToOneTimeSignature converts a HeartbeatProof to a OneTimeSignature.
+func (hbp HeartbeatProof) ToOneTimeSignature() OneTimeSignature {
+	return OneTimeSignature{
+		Sig:    hbp.Sig,
+		PK:     hbp.PK,
+		PK2:    hbp.PK2,
+		PK1Sig: hbp.PK1Sig,
+		PK2Sig: hbp.PK2Sig,
+	}
+}
+
+// ToHeartbeatProof converts a OneTimeSignature to a HeartbeatProof.
+func (ots OneTimeSignature) ToHeartbeatProof() HeartbeatProof {
+	return HeartbeatProof{
+		Sig:    ots.Sig,
+		PK:     ots.PK,
+		PK2:    ots.PK2,
+		PK1Sig: ots.PK1Sig,
+		PK2Sig: ots.PK2Sig,
+	}
+}
+
+// BatchPrep enqueues the necessary checks into the batch.  The caller must call
+// batchVerifier.verify() to verify it.
+func (hbp HeartbeatProof) BatchPrep(voteID OneTimeSignatureVerifier, id OneTimeSignatureIdentifier, msg Hashable, batchVerifier BatchVerifier) {
+	offsetID := OneTimeSignatureSubkeyOffsetID{SubKeyPK: hbp.PK, Batch: id.Batch, Offset: id.Offset}
+	batchID := OneTimeSignatureSubkeyBatchID{SubKeyPK: hbp.PK2, Batch: id.Batch}
+	batchVerifier.EnqueueSignature(PublicKey(voteID), batchID, Signature(hbp.PK2Sig))
+	batchVerifier.EnqueueSignature(PublicKey(batchID.SubKeyPK), offsetID, Signature(hbp.PK1Sig))
+	batchVerifier.EnqueueSignature(PublicKey(offsetID.SubKeyPK), msg, Signature(hbp.Sig))
+
+}
+
 // A OneTimeSignatureSubkeyBatchID identifies an ephemeralSubkey of a batch
 // for the purposes of signing it with the top-level master key.
 type OneTimeSignatureSubkeyBatchID struct {
diff --git a/onetimesig_test.go b/onetimesig_test.go
index ca7b641ead..d9eec123d3 100644
--- a/onetimesig_test.go
+++ b/onetimesig_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/passphrase/errors.go b/passphrase/errors.go
index 84918ce395..00d2d948fb 100644
--- a/passphrase/errors.go
+++ b/passphrase/errors.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/passphrase/passphrase.go b/passphrase/passphrase.go
index 6c1364229b..3bcee21107 100644
--- a/passphrase/passphrase.go
+++ b/passphrase/passphrase.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/passphrase/passphrase_test.go b/passphrase/passphrase_test.go
index 8824116505..66a9ae51fd 100644
--- a/passphrase/passphrase_test.go
+++ b/passphrase/passphrase_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/passphrase/wordlist.go b/passphrase/wordlist.go
index d2b786f411..66ebac5111 100644
--- a/passphrase/wordlist.go
+++ b/passphrase/wordlist.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/rand.go b/rand.go
index e74b62f9dc..7d9e391072 100644
--- a/rand.go
+++ b/rand.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/rand_test.go b/rand_test.go
index 49d431c8ee..b2e768b067 100644
--- a/rand_test.go
+++ b/rand_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/coinGenerator.go b/stateproof/coinGenerator.go
index eb256336dc..a8a7199ad1 100644
--- a/stateproof/coinGenerator.go
+++ b/stateproof/coinGenerator.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/coinGenerator_test.go b/stateproof/coinGenerator_test.go
index cf4b326eae..38df47c179 100644
--- a/stateproof/coinGenerator_test.go
+++ b/stateproof/coinGenerator_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/committableSignatureSlot.go b/stateproof/committableSignatureSlot.go
index c53df6960d..07a1d9885e 100644
--- a/stateproof/committableSignatureSlot.go
+++ b/stateproof/committableSignatureSlot.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/committableSignatureSlot_test.go b/stateproof/committableSignatureSlot_test.go
index 5723df5aab..93a890d427 100644
--- a/stateproof/committableSignatureSlot_test.go
+++ b/stateproof/committableSignatureSlot_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/const.go b/stateproof/const.go
index 35c6134e98..3580aaba6b 100644
--- a/stateproof/const.go
+++ b/stateproof/const.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/prover.go b/stateproof/prover.go
index 45d9e27aa2..f7c6e69282 100644
--- a/stateproof/prover.go
+++ b/stateproof/prover.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/prover_test.go b/stateproof/prover_test.go
index 42a0daa5ed..d804e9cf0c 100644
--- a/stateproof/prover_test.go
+++ b/stateproof/prover_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/structs.go b/stateproof/structs.go
index f82edbd6c0..ecb8782da8 100644
--- a/stateproof/structs.go
+++ b/stateproof/structs.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/verifier.go b/stateproof/verifier.go
index 0f36f95a50..1afbf0ab45 100644
--- a/stateproof/verifier.go
+++ b/stateproof/verifier.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/verifier_test.go b/stateproof/verifier_test.go
index 352a53202a..5d26d642f3 100644
--- a/stateproof/verifier_test.go
+++ b/stateproof/verifier_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/weights.go b/stateproof/weights.go
index 874222f493..95e72d627e 100644
--- a/stateproof/weights.go
+++ b/stateproof/weights.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/stateproof/weights_test.go b/stateproof/weights_test.go
index 718382563d..19a93f3622 100644
--- a/stateproof/weights_test.go
+++ b/stateproof/weights_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/statetrie/nibbles/nibbles.go b/statetrie/nibbles/nibbles.go
index d2f95678fd..ade9117674 100644
--- a/statetrie/nibbles/nibbles.go
+++ b/statetrie/nibbles/nibbles.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/statetrie/nibbles/nibbles_test.go b/statetrie/nibbles/nibbles_test.go
index 7b355c0386..0e81bef5e9 100644
--- a/statetrie/nibbles/nibbles_test.go
+++ b/statetrie/nibbles/nibbles_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/util.go b/util.go
index 8d167dfc8b..aa957a408b 100644
--- a/util.go
+++ b/util.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/util_test.go b/util_test.go
index 01941511b3..9c19053cec 100644
--- a/util_test.go
+++ b/util_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/vrf.go b/vrf.go
index 0002a7b2f7..b78580671f 100644
--- a/vrf.go
+++ b/vrf.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify
diff --git a/vrf_test.go b/vrf_test.go
index 7acc791732..55f781b98c 100644
--- a/vrf_test.go
+++ b/vrf_test.go
@@ -1,4 +1,4 @@
-// Copyright (C) 2019-2024 Algorand, Inc.
+// Copyright (C) 2019-2025 Algorand, Inc.
 // This file is part of go-algorand
 //
 // go-algorand is free software: you can redistribute it and/or modify